.auth-container {
  min-height: 100vh;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.auth-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  width: 100%;
  max-width: 420px;
  transform: translateY(0);
  transition: all 0.3s ease;
}

.auth-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.auth-header {
  background: linear-gradient(135deg, #1b2556 0%, #381060 100%);
  padding: 40px 30px;
  text-align: center;
  position: relative;
}

.auth-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="10" cy="50" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="90" cy="30" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>') repeat;
  opacity: 0.3;
}

.auth-logo {
  color: white;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 10px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  position: relative;
  z-index: 1;
}

.auth-title {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.1rem;
  font-weight: 300;
  margin: 0;
  position: relative;
  z-index: 1;
}

.auth-body {
  padding: 40px 30px;
}

.form-group {
  margin-bottom: 25px;
  position: relative;
}

.form-control {
  width: 100%;
  padding: 15px 20px;
  border: 2px solid #e9ecef;
  border-radius: 10px;
  font-size: 16px;
  transition: all 0.3s ease;
  background: #f8f9fa;
  box-sizing: border-box;
}

.form-control:focus {
  outline: none;
  border-color: #667eea;
  background: white;
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
  transform: translateY(-2px);
}

.form-control::placeholder {
  color: #6c757d;
  font-weight: 400;
}

.btn-auth {
  width: 100%;
  padding: 15px;
  background: linear-gradient(135deg, #1b2556 0%, #381060 100%);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-auth::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.btn-auth:hover::before {
  left: 100%;
}

.btn-auth:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.btn-auth:active {
  transform: translateY(0);
}

.auth-links {
  text-align: center;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid #e9ecef;
}

.auth-links a {
  color: #667eea;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.auth-links a:hover {
  color: #764ba2;
  text-decoration: underline;
}

.invalid-feedback {
  color: #dc3545;
  font-size: 0.875rem;
  margin-top: 8px;
  display: block;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.form-control.is-invalid {
  border-color: #dc3545;
  background-color: #fff5f5;
}

.form-control.is-invalid:focus {
  border-color: #dc3545;
  box-shadow: 0 0 0 4px rgba(220, 53, 69, 0.1);
}

@media (max-width: 480px) {
  .auth-container {
    padding: 10px;
  }
  
  .auth-card {
    max-width: 100%;
  }
  
  .auth-header {
    padding: 30px 20px;
  }
  
  .auth-body {
    padding: 30px 20px;
  }
}

/* Registration page specific styles */
.auth-card.register {
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
}

.alert {
  border-radius: 10px;
  border: none;
  padding: 15px 20px;
  margin-bottom: 20px;
  animation: slideDown 0.3s ease;
}

.alert-danger {
  background: linear-gradient(135deg, #ff6b6b, #ee5a52);
  color: white;
}

.alert-info {
  background: linear-gradient(135deg, #4ecdc4, #44a3a0);
  color: white;
}

.alert ul {
  margin: 10px 0 0 0;
  padding-left: 20px;
}

.alert li {
  margin-bottom: 5px;
}

@media (max-width: 480px) {
  .auth-card.register {
    max-height: 95vh;
  }
}